The main goal of using the machine learning tool available with the elastic stack is extracting the maximum value from the information we index. Thus far, we've been able to obtain page views with real time searches or perform data aggregations, but now machine learning allows us to address more particular behaviour and have more specific visualizations using learning techniques.

An Alfresco module for face and emotion recognition using Microsoft Azure, that analyze people photos and extract information about the gender, age, face expressions, emotions and others. So you can make a bulk photo import to Alfresco, and then make searches(for example, to know how many 30 age people photos are in the repository).